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tia_tia [17]
2 years ago
7

Simplify 7 + (−3). Please hurry -10 -4 4 10

Mathematics
2 answers:
Viefleur [7K]2 years ago
7 0

Answer: The answer is 4. 7+(-3) is like 7 minus 3.

Step-by-step explanation:

Lilit [14]2 years ago
6 0

Answer:

4

Step-by-step explanation:

since the 3 is negative, you need to take 3 away from 7 = 4

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A study of commuting times reports the travel times to work of a random sample of 20 employed adults in New York State. The mean
Elodia [21]

Answer:

The standard error of the mean = 5.14 mins

Step-by-step explanation:

Number of random sample (n) = 20

Mean(X) = 31.25 mins

Standard deviation (α) = 23.7 mins

Standard error of mean =

standard deviation / √sample size

= 23.7/√20

= 23.7/4.4721

= 5.14 mins

5 0
3 years ago
Solve the equation below :<br><br> 7 – 9x – 15 + 12x
masha68 [24]

Answer:

-8+3x

Step-by-step explanation:

7 – 9x – 15 + 12x

We cannot solve since there is no equals sign, we can only simplify

Combine like terms

7 -15   -9x+12x

-8          +3x

4 0
3 years ago
Read 2 more answers
a plane flies 480 miles with a 15 mph tailwind and then back 480 miles with a 15 mph headwind. if the plane completes the trip i
Minchanka [31]
Since we know the x and y, you would divide 480 by 15 and 32 miles per hour. Then you would multiply 7.2 by 32 and get 230.4. Your trying to find with wind and against wind so just times that by two and get 460.8. I think
8 0
2 years ago
Help me with this please
liraira [26]

Answer:

B

Step-by-step explanation:

the data value of x is 0 the the value would be .75 times that by 2 get 1.25

8 0
3 years ago
Find tsa of cylinder whose height is 7cm and radios 4cm.​
ki77a [65]

Answer:

Answer

Let height =h

Total surface area=2πr(r+h)

r=7cm

⇒968=2×  

7

22

​  

×7(7+h)

⇒  

44

968

​  

=7+h

⇒h+7=22

⇒h=22−7

=15cm.

Step-by-step explanation:

6 0
3 years ago
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